Control method for high voltage ride-through rotor of doubly-fed wind turbine based on servo algorithm
A technology of wind power generators and doubly-fed generators, which is applied in the field of control of high-voltage ride-through rotors of doubly-fed wind power generators, and can solve the problems of inability to balance equipment costs, prediction accuracy and calculation efficiency, and short processing time
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Embodiment 1
[0047] refer to figure 1 , in order to verify the feasibility and effectiveness of this method, the following experimental testing platform was built: a doubly-fed wind power generator, the initial voltage of the stator of the doubly-fed wind power generator is Us=690v, and the initial voltage of the rotor is Ur=220v , speed n=1800r / min. In Example 1, the sudden increase p=0.3, the comparison curves of the fitness of different algorithms are as follows figure 2 As shown, the example steps are as follows:
[0048] Step 1: Collect three-phase current, three-phase voltage, wind turbine speed n and grid voltage surge p from the rotor side of the double-fed wind turbine, where the three-phase current on the rotor side of the double-fed wind turbine is recorded as A phase current i a , B-phase current i b and C-phase current i c ; The three-phase voltage on the rotor side of the doubly-fed wind turbine is denoted as the A-phase voltage u a , B-phase voltage u b and C-phase v...
Embodiment 2
[0078]In Example 2, the maximum number of iterations M is set to 100, and the sudden increase is p=0.1. The comparison curve of the fitness of different algorithms is as follows: Figure 5 As shown, the example steps are as follows:
[0079] Step 1: Collect three-phase current, three-phase voltage, wind turbine speed n and grid voltage surge p from the rotor side of the double-fed wind turbine, where the three-phase current on the rotor side of the double-fed wind turbine is recorded as A phase current i a , B-phase current i b and C-phase current i c ; The three-phase voltage on the rotor side of the doubly-fed wind turbine is denoted as the A-phase voltage u a , B-phase voltage u b and C-phase voltage u c ;
[0080] Step 2: Collect the collected three-phase current A-phase current i on the rotor side of the doubly-fed wind turbine a , B-phase current i b and C-phase current i c Transform from the three-phase stationary coordinate system to the two-phase synchronous...
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